The world's greatest detectives are invited to the mansion of a wealthy recluse, who reveals a murder will be committed at midnight and that a million-dollar reward is on offer to the first sleuth to solve it. Comedy, spoofing classic literary detectives including Charlie Chan, Poirot and Sam Spade. Starring Peter Sellers, Peter Falk, David Niven, Truman Capote, Maggie Smith and Alec Guinness